Tiste barbarott



Jan. 29 1924. I 1,482,212

/ M. J. B. BARBAROU ELECTROMAGNETIC IGNlfTION SWITCH FOR INTERNALCOMBUSTION ENGINES Filed Aug. 20. 1920 3 Sheets-Sheet 1 //v VE/V TORMar/ 05, Jed/7, Bapfisfe, Earbama.

Jan. 29 1924.

M. J. B. BARBAROU' ELECTROMAGNETIC IGNITION SWITCH FOR INTERNALCOMBUSTION ENGINES Filed Aug. 20, 1920 3 SheetsSheet Fig.5.

lag-4 WI ENTOR r Mar/us Jean 50,0775? Barbarou.

Jan. 29 1924- M. J. B. BARBAROU nwcmomensnc IGNITION SWITCH FOR INTERNALCOMBUSTION ENGINES Filed Aug. 20. 1920 3 Sheets-Sheet 3 H x Marius J'zanBa Tuste Bavbcubu INVENTOR,

Attorney.

Patented Jan. 29, 1924.

MARIUS JEAN BAPTISTE BARBAROU, OF NEUILLY-SUR-SEINE, FRANCE.

ELECTROMAGNETIC IGNITION SWITCH FOR INTERNAL-COMBUSTION ENGINES.

Application filed August 20, 1920. Serial No. 404,856.

To all whomit may concern:

Be it known that'l. llIARIUS JEAN BAP TISTE BARBAROU. a citizen of theRepublic of France, residing at Neuilly-sur-Seine,

b in the Republic of France, have invented new and useful Improvementsin Electro magnetic Ignition Switches for Internal- Combustion Enginesof which the following is a specification.

It is the customary practice to carry out the ignition of explosionmotors by the use of a magneto.

But in the case of motor starting devices it is not an easy matter toobtain the proper starting. by reason of the slow initial speed given tothe explosion motor by the starter.

It is in fact recognized that a minimum speed of 60 to 70 revolutionsper minute is required for the motor in order to obtain a suitable sparkfrom the magneto. said minimum speed being the absolute speed at themoment of the occurrence of the compression. i. e.. of the ignition.

However in the case of a motor of mean or high power, it becomesimpossible to provide a starter having a sufficient capacity togetherwith a storage battery suitable for supplying the same, whereby the saidminimum speed of 60 to 70 revolutions shall be obtained under allcircumstances at the moment of occurence of the compression.

On the other hand the fact that a storage battery is provided for thelighting and for motor starting will afi'ord a convenient means foremploying an ignition distributor supplied by a high tension coil.

This invention has for its object to utilize the high tension sparkcoil. which produces a constant spark at all speeds of the motor, toprovide for the ignition upon starting the motor, while the magneto willsecure the ignition at normal speed. These two operations are carriedout in an automatic manner by the use of an apparatus termed permutator.which is the object of this invention.

In the accompanying drawings which are given by way of example:

Fig. 1 is a longitudinal axial section of an ignition permutatorconstructed according to this invention.

Fig. 2 is a corresponding plan view.

Fig. 3 is an end view of the left hand side of the same.

side.-

Fig. 5 is a diagrammatic view indicating the various electricconnections between the permutator and the cooperating members of theignition device.

As represented in the drawing, the ignition permutator according to thisinvention comprises essentially a metal casing having disposed thereinthe magnetic field member 6 of an electro-magnet, the disk-like armature0 whereof is movable axially. The said armature is secured to a centralcore having the internal portion thereof constituted of an insulatingsubstance e. The other end of the core is provided with a rounded studf.

The movable assemblage of the electromagnet is returned to theinoperative position by means of the spring g.

The magnet coil h is constituted by a winding having one end thereofconnected to the metal framework the other end being connected to theterminal iby the lug j. The terminal 2' is mounted upon the cover A:constructed. of insulating material.

At the other end of the casing a is in serted a block Z of insulatingsubstance hav-' ing disposed thereon the three terminals m,

A cut out portion in the block 1 contains swinging therein the rockingmember 77 also of nsulating material.

A metal cross pin 1 serves as a pivot for the same.

The rocking member 71 is provided upon its opposite sides with the twoflat contact strips 1", r.

The strip 1' is in constant contact with the terminal m through themedium of the coil'd spring 8. while the strip 1- is maintained inconstant connection with the terminal n by means of the spring blade 25.

The contact member a is on the other hand connected to the terminal 0.

The terminal 0 is connected to the ignition distributor D (Fig. 5)supplying the spark plugs, the terminal at is connected to the hightension spark coil C supplied by the battery Z, and the terminal m isconnected to the magneto B. Connection is also made between the terminal71 of the electro-magnet coil and a suitable terminal Q) on the hightension coil C whereby the current of the battery Z is supplied at thesame time to the electro magnet of the permutator A and the spark coilC.

The connections are properly made by means of a combination switch Wwhose handle a is operated by the driver of the vehicle.

Y is the line connected to the generator.

The said handle is adapted to take three positions, viz

1-Full stop.

2-Operating with magneto.

3Operating with high tension spark coil for the starting.

Under the above conditions, the operation of the permutator is asfollows:

In the normal position for the motor running with magneto, the switchbeing in the position numbered 1,, the contact strip 7" or" the rockingmember is in constant contact with the contact. member 14, wherebyconstant connection is provided between the terminal 0 and the t'xrminalm, i. e., between the magneto B and the distributor D.

At the moment of starting, with the handle placed in the position start(numeral 3 of the diagram), the current is sent into the electromagnet hof the 'permutator whereupon the movable armature will be attracted andthe stud f will exert a pressure upon the rocking member 9, causing thislat ter to swing. At the end of the stroke, the strip r will come inturn in contact with the member a. At this moment, by reason of thespring contact member 25, electric connection will be made between theti'rminal n and the terminal 0., i. e., between the high tension coil Cand the distruloutor D. The starter is put in action and the explosionmotor will now rotate.

As soon as this latter commences running by its own means, the switchhandle is placed in the position magneto (numeral 2 of the diagram).

The connection is now broken between the electro-magnet'of thepermutator A and the battery Z on the one hand, and the spark coil C andthe battery Z on the other hand.

The springs sand 9 will add their effect to drive back the movablearmature, and the rocking member now assu'mesits normal position,whereby the magneto B is connected to the ignition distributor D. Theignition is thus definitely effected by the magneto B alone.

Having now described my invention, what I claim as new and desire tosecure by Letters Patent is An ignition electromagnetic switchcomprising a casing, an energizing coil therein, a spring controlledcore slidable axially through said coil and provided at one end with aninsulating member, a rocker adapted to be operated by said insulatingmember, said rockerha-ving a rounded end, parallel. contact bladesseparate from each other on said rocker, one of said blades extendingover said rounded end, a fixed contact member with which said contactblades are adapted to alternately contact, a returning coiled springadapted to convey an electric current to one contact blade, and a springblade in constant contact with th rounded part of the other contactblade and adapted to convey an electric current to the same In testimonywhereof I have signed my name to this specification.

MARIUS JEAN BAPTISTE BARBAROU.

